This is quite true.
The 500 round suggestion was more an open ploy to encourage doddg to put in more trigger time before jumping ship.
500 rounds for a lot of us is just an average range trip!!!
I just got back from MCFG where I ran almost 300 rounds in a quick range trip. I'll try to do another 200 tomorrow morning too. As a side note, the left handed shooting is coming along nicely. I was practicing DA holster draws, double taps and transitions this morning, all left hand only. Confidence is building with every range trip.